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package main
import (
"fmt"
"strings"
"time"
"github.com/bettercap/nrf24"
)
var (
hopPeriod = 100 * time.Millisecond
)
func address(raw []byte) string {
parts := []string{}
for _, b := range raw {
parts = append(parts, fmt.Sprintf("%02X", b))
}
return strings.Join(parts, ":")
}
func main() {
fmt.Printf("nRF24LU1+ - RFStorm Scanner\n\n")
dongle, err := nrf24.Open()
if err != nil {
fmt.Printf("error: %v\n", err)
return
}
defer dongle.Close()
fmt.Printf("device open: %s\n", dongle.String())
if err = dongle.EnableLNA(); err != nil {
fmt.Printf("error enabling LNA: %v\n", err)
} else {
fmt.Printf("LNA enabled\n")
}
if err = dongle.EnterPromiscMode(); err != nil {
fmt.Printf("error: %v\n", err)
return
} else {
fmt.Printf("device is in promisc mode\n\n")
}
ch := 1
chIndex := 0
lastHop := time.Time{}
for {
if time.Since(lastHop) >= hopPeriod {
ch = nrf24.LoopChannels(&chIndex)
if err := dongle.SetChannel(ch); err != nil {
fmt.Printf("error setting channel %d: %v\n", ch, err)
} else {
lastHop = time.Now()
}
}
if buf, err := dongle.ReceivePayload(); err != nil {
fmt.Printf("error receiving payload on channel %d: %v\n", ch, err)
} else if len(buf) >= 5 {
addr, payload := buf[0:5], buf[5:]
fmt.Printf("found device %s on channel %d (payload:%x)\n", address(addr), ch, payload)
}
}
}
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